In the US:
Police shuts the street down for 48 hours.
Takes 12 hours to talk him out of it.
Spend 1 million US$ to give him a "fair trial", including the costs of retrial when the first is declared null due to a hung jury 'cause of "media influences"
Pay his food and lodging for 6 months.
Then, finally, let him free to go and when even the second trial is concluded as a mistrial due to "media influence". The hostage-taker becomes a celebrity and sells his story to Hallmark to make a TV movie. Writes a book and makes millions. Becomes a frequent TV host and a well-known "motivator".